Description:A specially developed probiotic formula featuring 10 high quality probiotic species. This productalso features the patented BIO-tract delivery system that protects the live organismsfrom gastric acid to ensure their delivery into the intestines. This formula alsocontains fructo-oligosaccharides (FOS) which are added to provide food for bacterialproliferation. No refrigeration is required. Simply keep this product in a cool,dry place for best storage.